Carbureter.



fa. COSTA:

GAHBURETER.

APPLICATION FILED Amm, 1915.

TTOENEY'" A. COSTA.

CARBURETER. APPLICAIIQN man M1644. 1915.

Patented July 10, 1917*.

/N VEA/iro@ the suction of the engine, raises the ioat 6 whereuponthrough the medium of the link 7 Aand the lever 8,. the valve 9 closesthecommunication 10 and shuts ofi' the supply of gasolene to theauxiliary chamber 4.

-The kerosene chamber 21 surrounds the.

gasolen'e chamber 4 and the casting 2` has an opening 22 communicatingwith a nipple v23 by means of which the kerosene joil-sup4 A oat 24A plypipe is connected thereto.

' of a circular ring-'like form is located in the .15I a stud 29 carriedby the casting 2. rIhe .outer free end of the yoke 27 has pivotallykerosene chamber and is provided with two downwardly extending lugs and26 to which is loosely connected the yoke 27, said yoke beingintermediately pivoted at 28 to carried thereby a valve 30,` whichcloses lthe communication 22 of the kerosene supply whereby a'pre-determined oil level is mainlta-ined within the kerosenereceptacle. The casting 2 .has formed integral there,-

with an extension 31, which terminates 'in a. cylindrical upwardlydisposed mixing chamber 32# The 'chamber 32 isprovided munication withthe kerosene chamber` 21.

48 f y the drawing, extends upwardly about midway the height o`fthemixing chamber and The gasolene passage 34 likewise has an eX-tension 37 Awhich extends through the casting 2` and is in`communication with the central gasolene chamber 4, as clearly shown inFigs. 1 and 5 of the drawings.

The oil nozzle 33, as shown in Fig. 1, of

the oil passagel 35 has a. contracted upper `end 38, forming a seat 39for the valve 40.

The valve 40 extends downwardly through. the passage and has ascrew-threaded portion 41 screwed within the nipple 42 formed 'as a partof the casting2. The lower end of the stem below the' nipple is providedwith an operating handle 43 and a lock-nut 44, by means of whichthevalve-stem may yis provided with` a` central oil-discharge be positivelylockedin its adjusted position to' prevent the jar to which thecarbureter is subjectedfrom working the valve-stem in either direction.The upper end of the oilnozzle 33, as shown in Fig. 5'of theI drawings,is preferably` flat anda cap 46 tightly lits over and around the upperend o the nozzle leaving `a space 37 between the" upper end of thenozzle and the cap. The nnzzle opening 48,I for discharging eithervkerosene or gasolene therefrom. yThis opening 48 is of a diameterlessthan that of either Of the f openings 34 and 35. The nozzle 46 hasits .of the-'mixing chamber and held in this` spaced position by meansof the webs 51, as shown in Fig. 1 ofthe'drawings. The mixing tubestarts at a point considerably labove the bottbm of the mixing chamberand has an inwardly curved portion 53 in a horizontal alinement with theupper end of the nozzle 46. This inwardly `drawn portion forms acontracted opening surrounding the .beveled walls 49 lot the nozzle 46.The mixing tube above the flange is again flared outwardly and extendsvertically to a point adjacent the upper end of the mixing chamber. Thisvertical portion 54 of the mixin tube is provided'with a great number-operforaticns 55, which slant upwardly from the outer surface andentirely surround the mixing tube. The mixing chamber 32 is drawninwardly at a point in horizontal alinement'ivith the upper end of thevertical portion of the mixing tube and is provided with an inwardlybeveled portion 57,

terminating in an outwardly beveled portion 58, which ends at theextreme upper end of the mixing chamben The inwardly drawn portion `ofthe mixing tube forms a small circular passage 59 between it and theupper solid end 60 in the mixing tube.

Within the upper end of the mixing cham:- ber is a butterfly valve 61,mounted upon a Vshaft 62, which extends outwardly and is provided withan operatinglever' 63, con I gnected to a rod 64, which, extendsforwardly and inv easy reach` of the operator. The butterfly valve 61vhas one end beveled at 65, -in one direction to fit the outwardlybeveled .portion 58 of the mixing chamber and the other end beveled inthe4 opposite direction, as indicated at 66 vtoengage the 4inwardly vbeveled wall. 57 of the mixing chamber, whereby a tight joint is formedto entirely cut` off suction from the vintake manifold of the engine.The extreme upper end-of the mixing chamber 32 is provided with anannular flange 67, which is adapted to be bolted to the pipe 68 leadingto the intake manifold 14.

The lower end of the mixing chamber has formed integral therewith or asan extenf sion of the casting 2, an outwardly extending portion 69forming the air-intake to the mixing chamber.. Secured to the lower faceLasa a;

xdrawings. The couplingy 71 has connected at 1tsouter end a flexibletube 76., which'is in communication with the exhaust pipe or ex 'haustmanifold, asshown inFig. 2 of thev valve. 73 and draws a quantity of airor.

the exhaust from the exhaust-pipe from the engine, as will be described.

rlhe portion '69 at its upper end pro hereinafter more fully videdwith'an opening 80, in which is se- ,cured a sleeve 81 having a valveseat 82 at -its lower end', upon whichrests a valve 83 carrying astem 84, which extends upwardly and is normally held in an outwardly or.

.upwardly position lby means of the 4coiled ball 78. v n

spring 85. This spring 'is of. greater strength thanthe spring 7 5, sothat when the engine .is running slowly, the valve 83 is held closed andthe mixing chamber is only receiving the heated air through" the lpipe76.-` When the engine speeds up the suction through the mixing chamberis' greater, which overbalances the-.tension-,of the'springg/rand opensthe valve 83 and fresh cold air is takenin .through thesleeve 8 1 andlmixes with the heated air from the exhaust. In order to vary the.tension of the'spring, l provide a springfcap- 86,' working on the-spring in the4 same manner as the cap 76 and heldin itsadj'u's'tejdposify tion by meansgof a .ballj87-rthe same as .the

A small cylindrical-- adjacent the'engineand pipe 89 and connected to'ia.co upling5;. `f 'the es arten-'sed gasolene chamber 4.l'argervkero'senetanl:

90. is'likewise arranged adjacent the` engine andis provided with a pipe91 connected to the nipple 23., which communicates'with the' kerosenechamber 21. -Bythis arrangement it will be seen that both the keroseneand the gasolene chambers are indirect communica.-

tion with the supply tanks.

ln the formfshown in Fig. 3, it has been found very advantageous to heatthe mixture or vapor as it passes from the upper end of the, mixingchamber 32 and l. accomplishthisby placinga block 92 between the upperendof the mixing chamber 32 andthe pipe- 68l leadingto the manifold.This, as will. be readily seen closes the. communication between thepipe 68 and the upper end of the mixing chamber 32. IThe upper end ofthe mixing chamben'in the form shown in Fig. 3, has a pipe 93 incommunication therewith, which leads around and vthrough the. exhaustmanifold 94 and extends back and is connected tothe pipe' 68 at 9 5above provided with 'a'.-4

passage oithe'vapor or mixture through the exhaust-manifold heats itvery` ,intensely so sage to the mixing chamber and nozzle and in orderto accomplish this, I haveshown the water-jacket entirely surroundingtheA carbureter, as shown in Fig. 7 of the drawing. A water space 96surrounds the oil receptacle, which is in communication with thewater-space 97 through the passage 98,

that a moreperfect combustible mixture is and said 'passage being in:communication j with the water-space 99. .'surrounding the'mixingchamber 32, through the passage 100. The water is taken into thejacket through the pipe 101 at the upper end-of the mixing chamber andcirculates therearound and also around the air-intake valves andaroundthe oil receptacleand is discharged through the pipe 102 at thebo'ttom'of the oil receptacle.

"lhe operation of the device is as fo llVhen thelengine isat rest, asheretofore described, .the'ball 1 8 drops upon the-ring 19 and the valve9'is opened so that a quantity of' gasolene passes to "the chamber .4.An .oil-level is maintained within the `kerosene chamber 21 by means ofthe float 24, as herelows:

tofore described, and my improvedfcarbuy fiber and draws the gasolenefrom the pas- 1 sage- 134,* out .through theopenin-g 38 in the nozzleinto' jt-'he perforated upper end of thel I 'n'ixin'g tube to theintakefmanifold andthe 4 en -gine isistarted. With vthe starting of the"engine-a suction is caused in the manifold 14 and :through thepipe- 13the ball 18is drawn upward uponthe seat-17, which' prevents the'manifold'from drawing the gasolene directly fromthe gasolene chamber 4;'

the ball `being.-connected to the.ioat the valve is closed vand heldclosed as long as the enginel is running. The suction through themixingchamber, as heretofore described,

opens the valve 73 and draws the heated air into the lower end'o themixing chamber and upwardly therethrough on both thein-\ ner and outersides of the mixing tube 50. When it reaches the inwardly drawn portionM52 of the mixing tube it shoots across the upper beveled end 49 of thenozzle and draws the gasolene from the opening 48 in lll@ the nozzle. Atthe Sametime the portion of the air which has passed on the outside ofthe mixing tube 50, travels inwardly through the openings 56 "andcauses'cross-currents of air with the/air and mixture passing throughthe -opening53` and thoroughly breaking up 65 the block 92.` lt hasybeen found that the all vapor particles suspended in the air andheavier oil.

thoroughly mixing the same. The 'vapor f then passes upwardly out of theperforated vall of the gasolene within the chamber 4f hasbeen/consumed;- the heavier oil or kerosene being` not acted upon aslong as there is any light oil within the nozzle 33. By the time all ofthe gasolene is consumed, the engine is heatedup and the air taken inthrough the passage 71 has'become thoroughly heated i and passes throughthe mixing chamber, the

entire chamber and the nozzle is heated so that the exact operationtakes place with the When the engine is stopped,-the ball 18 drops uponthe ring 19, allowing the float to descend and open the valve 9,allowing ana other charge of gasolene to pass tothe chamber 1, and theiioat valve cutting ofil the supply of gasolen'efafter/it has reached apre-determined levelin Athe chamber.` `It `might be possible tol startthe engine di-^ reetly after stopping without'the' use of gasolene', butto vmake the device wholly automatic so that there will be no cocks orhand-operatingmeans tofool with, the gasolene supply is renewed wheneverthe engine isstopped' This application is a substitute for a priorapplication Serial #765,322, lled 3,

Claims:

1. A carbu-reter` comprising a mixing chamber, a light oil supply forsaidV chamber, a heavy yoil supply for 'said chamber,

` and means controlled by the suction of the engine for cutting off thesupply of light oil after the engine is star-ted.

2. A- carbur'eter, comprisingI av mixing chamber having a lightandheavyJoil-sup-- ply, an automatic means for cutting oi' the lightoil-supply after the engine is started and opening up. the supply whenthe engine.

isstopped.

v3, A carbureter comprising a mixing chamber, an oil supply nozzleextending upwardly from the bottom of the chamber to a point aboutlmid-way its height, a mixing tu-bewithin the mixing chamber and spacedfrom the nozzle and the wall of the mixing chamber -and terminating somedistance above the lower end of thechamberVsaid mixing tubjelhavingan'inwardly contracted portion in a line with the upper end ofthenozzle, said tube above the contracted portion having perforationsinclined upwardly from the outside, and the upper end of the mixingchamber 'above the perforated por- 'tion of the tube having inwardlyinclined `walls terminating in outwardly inclined bers to the mixingchamber, `oil supplies for said chambers and means operated by the'suction of the engine for cutting oif the light oil-supply after theengine is started. A carbureter, comprising a mixing chamber, alightoil-supply chamber adjar cent the mixing chamber, a heavy oil sup` plysurrounding the light eil-supply, supply pipes for said oil chambers,oat valves controlling the supply of oil to the said chambers, meansopera ted by the suction of the engine for cutting on' the supply oflight oil to its chamber, a nozzle extending upwardly within the mixingchamber and having two passages of different-sizes in communication withthe light and heavy oil chambers, and means for supplying air to themixing chamber at its lower end. 6. A carbureter, comprising a mixingchamber, an oil-supply nozzleextending upwardly from the lower lend ofthe mixing chamber and having two oil passages of different sizestherethrough, one for light oil and one for heavy oil, a cap on theupper tween it and the upper end of thef nozzle and having a singlepassage communicating with the space, and means within thenozzle forcontrolling the'supply of heavyoil therethrough.

- 7.,A carbureter, comprising a mixin chamber, 'an oil supply for thechamber an extending upwardly from the bottom thereof, a mixing tubehaving a solid lower end surrounding the oil-supply and a perforatedupper endy above the oil-supply, a butterfly valve within the mixingchamber above the perforated portion of the tube' and means forsupplylng ai-r to the lower end ofA the mixing'chamber on the' insideand outside of the mixing tube.

8. iA carbureter, .comprising a -mixing chamber, anoil-supply nozzleextending upwardly vfrom the bottom thereof, a mixing tube having asolid portion surrounding the .oil supply and drawn inwardly at theupper end of the oil supply and having a perforated portion of lessdiameter than the lower portion above the oil supply, the up-V per endof the mixing chamber above the perforated portion of the mixing tubecontracted and then expanded, and. means for supplyinghot and cold* airtothe lower end of the mixing chamber onthe inside and outside of thetube.

' 9.'A carbureter, comprising a receptacle 'havinglight'and heavy oilchambers -end of the nozzle and having a space beneeaae'z .jacentthereto and in communication there- Withya light and heavy oil-supplyfor said chambers, a pipe connected to' theintake manifold of an enginefor closing the supply of-light oil to the chambers by the suction inthe manifold, and means for supplying the mixing .chamber with thevexhaust from the. engine, andl means for heating the vapor or mixtureas it passes from the mixing chamber to the intake manifold.

1l. A carbureter? comprising a mixing chamber.J a light `o1l chamber, aheavy oil chamber surrounding the light oil chamber, said light andheavy' oil chambers bein in communication With the mixing cham er, saidheavy oil chamber 'and the mixing chamber having a Water jacketsurrounding the same and in communication with the Water circulation ofan enginel l2l A carbureter,l comprising a mixing chamber, a lightandheavy oil-supply for said chamber, the upper end of said `chambei beingin communication With the intake manifold, and means caused by thesuction in the manifold for drawing the exhaust of the engine into themixing chamber When the engine is running slowly and to draw y both theexhaust and fresh cold air engine is running fast.

13, A carbureter, comprising a mixing chamber, an oil chamber adjacentthe mixing chamber, the upper end of the mixing chamber in commimicationwith the intake when the manifold, 4a pipehleading from the exhaust y ofthe engine to the mixing chamber and an auxiliary air-port incommunication with the atmosphere, ,vherebylthe suction of the enginethrough the manifold draws the exhaust into the mixing chamber when theengine is running slowly and draws both the exhaust and fresh cold airWhen the engine is running fast.

14. A carbureter comprising 'a mixing chamber, an oil-supply nozzleextending upwardly from ythe lower end of the mixing chamber and havingtwo oil-passages of dify iferent sizes therethrough one for the lightoil and one for heavy oil7 a cap on the up-` per end of the nozzle andhaving a space between it and the upper end of the -nozzle and having asingle passage communicating with the space of a diameter less than thatof the heavy andI light oil-passages.

Signed by me, this 11th day of August7 1915.

ANTHNY QSTA.

Attested by:

H. B., Fax,

Tnoe. H., Een

